feat: add specVersion classification to conformance scenarios (#147)

* feat: add specVersions classification to conformance scenarios

Each scenario declares which spec versions it applies to as a list.
Scenarios that carry forward (e.g. initialize) list all applicable versions
['2025-06-18', '2025-11-25']. Scenarios removed from newer specs (e.g.
backcompat auth) only list their original version ['2025-03-26'].

- specVersions list on Scenario and ClientScenario interfaces
- --spec-version CLI filter uses simple .includes()
- Tier-check conformance matrix (Server / Client: Core / Client: Auth)
  with per-version columns and unique All* count
- 7 unit tests for specVersions helpers
- Updated tier-audit skill docs with matrix format

* fix: fix console output template for tier audit skill

The template had an orphan table header (Check | Value | T2 | T1)
with no rows above the conformance matrix, causing an empty table
to render. The scorecard rows below the matrix also lacked their
own header.

Fix: two self-contained tables with clear labels — 'Conformance:'
for the per-version matrix, 'Scorecard:' for the check rows.

* fix: align skill console template with tier-check script output

Add asterisk footnote ('unique scenarios — a scenario may apply to
multiple spec versions') and rename 'Scorecard' to 'Repository Health'
to match the labels used by the tier-check CLI output.

* fix: add specVersions to CrossAppAccessCompleteFlowScenario

Added in 83c446d on main after this branch diverged.

src/scenarios/server/tools.ts

@@ -2,7 +2,7 @@
  * Tools test scenarios for MCP servers
  */
 
-import { ClientScenario, ConformanceCheck } from '../../types';
+import { ClientScenario, ConformanceCheck, SpecVersion } from '../../types';
 import { connectToServer, NotificationCollector } from './client-helper';
 import {
   CallToolResultSchema,
@@ -13,6 +13,7 @@ import {
 
 export class ToolsListScenario implements ClientScenario {
   name = 'tools-list';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test listing available tools.
 
 **Server Implementation Requirements:**
@@ -95,6 +96,7 @@ export class ToolsListScenario implements ClientScenario {
 
 export class ToolsCallSimpleTextScenario implements ClientScenario {
   name = 'tools-call-simple-text';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test calling a tool that returns simple text.
 
 **Server Implementation Requirements:**
@@ -179,6 +181,7 @@ Implement tool \`test_simple_text\` with no arguments that returns:
 
 export class ToolsCallImageScenario implements ClientScenario {
   name = 'tools-call-image';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test calling a tool that returns image content.
 
 **Server Implementation Requirements:**
@@ -266,6 +269,7 @@ Implement tool \`test_image_content\` with no arguments that returns:
 
 export class ToolsCallMultipleContentTypesScenario implements ClientScenario {
   name = 'tools-call-mixed-content';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test tool returning multiple content types.
 
 **Server Implementation Requirements:**
@@ -366,6 +370,7 @@ Implement tool \`test_multiple_content_types\` with no arguments that returns:
 
 export class ToolsCallWithLoggingScenario implements ClientScenario {
   name = 'tools-call-with-logging';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test tool that sends log messages during execution.
 
 **Server Implementation Requirements:**
@@ -454,6 +459,7 @@ Implement tool \`test_tool_with_logging\` with no arguments.
 
 export class ToolsCallErrorScenario implements ClientScenario {
   name = 'tools-call-error';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test tool error reporting.
 
 **Server Implementation Requirements:**
@@ -538,6 +544,7 @@ Implement tool \`test_error_handling\` with no arguments.
 
 export class ToolsCallWithProgressScenario implements ClientScenario {
   name = 'tools-call-with-progress';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test tool that reports progress notifications.
 
 **Server Implementation Requirements:**
@@ -657,6 +664,7 @@ If no progress token provided, just execute with delays.
 
 export class ToolsCallSamplingScenario implements ClientScenario {
   name = 'tools-call-sampling';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test tool that requests LLM sampling from client.
 
 **Server Implementation Requirements:**
@@ -784,6 +792,7 @@ Implement tool \`test_sampling\` with argument:
 
 export class ToolsCallElicitationScenario implements ClientScenario {
   name = 'tools-call-elicitation';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test tool that requests user input (elicitation) from client.
 
 **Server Implementation Requirements:**
@@ -914,6 +923,7 @@ Implement tool \`test_elicitation\` with argument:
 
 export class ToolsCallAudioScenario implements ClientScenario {
   name = 'tools-call-audio';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test calling a tool that returns audio content.
 
 **Server Implementation Requirements:**
@@ -1008,6 +1018,7 @@ Implement tool \`test_audio_content\` with no arguments that returns:
 
 export class ToolsCallEmbeddedResourceScenario implements ClientScenario {
   name = 'tools-call-embedded-resource';
+  specVersions: SpecVersion[] = ['2025-06-18', '2025-11-25'];
   description = `Test calling a tool that returns embedded resource content.
 
 **Server Implementation Requirements:**